Paper-box-making machine



Oct. 29,1929. 5, p, FRYE PAPER BOX MAKING MACHINE Filed April 11, 1927 4Sheets-Sheet 1 INVENTOR.

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Oct. 29,. 1929; R. P. FRYE PAPER BOX MAKING MACHINE Filed April 11, 19274 Sheets-Sheet 3 wig , INVENTOR.

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Qci- 1929., R. P. FRYE PAPER BOX MAKING MACHINE Filed April 11, 1927 4Sheets-Sheet 4 1 fl li ATTORNEY. J

Patented Oct. 29, 1929 UNITED STATES ROBERT P. FRYE, OF MARLBORO,MASSACHUSETTS PAPER-BOX-MAKING DIAGHINE Application filed April 11,

This invention relates to paper box making machines, and has for anobject the pro vision of novel means for producing a box or covertherefor, which product, in the in terest of simplicity of descriptionwill be hereinafter termed a box, in which the intersecting sides havetabs adapted to reinforce the corners of the box and be pasted withtheir outer surfaces against the inner adjacent sides of the box, thesame to be preferably associated with the usual mechanism for applyingreinforcing strips at the corners of the structures.

The attachment or improvement may be used in association with frames andmechanisms of machines such as disclosed in Patents No. 728,086 of May12, 1903, and No. 1,383,697 of July 5, 1921. In this improvement, theblank to be shaped by the machine .is moved to a location where it \illbe operated on by mechanism for coating the tabs with adhesive while thesaid blank is shifted to locate the tabs with relative breakers whichwill force them to postions at angles to the sides of which they areapart, and into engagement with the adjacent sides of the box to whichthey are to adhere in the formation of the box.

It is a further object of this invention to provide novel bendingmechanism and novel adhesive applying instrumentalities coacting withthe other operating parts of the machine wherein by progressive stepsthe blank having the tabs thereon is bent and the parts thereof aresecured to produce a box.

WVith the foregoing and other objects in View, the invention consists inthe details of construction, and in the arrangement and combination ofparts to be hereinafter more fully set forth and claimed.

ln describing the invention in detail, reference will be had to theaccompanying drawings forming part of this application, where- -15 inlike characters denote corresponding parts in the several views, and inwhich Figure 1 illustrates a View in elevation of a fragment of a boxmaking machine with a device embodying the invention applied thereto;

1927. Serial N0. 182,904.

Figure 2 illustrates a plan view of the tab breaking instrumentalities,associated with other parts of a box machine;

Figure 3 illustrates a detail View in plan, partly in section of anadhesive applying device;

Figure 4: illustrates a sectional View on the line H of Fig. 1;

Figure 5 illustrates a plan View of a fragment of a blank;

Figure 6 illustrates an end View of the former with the blank and pasteapplying rollers in section;

Figure 7 illustrates an end view of the side former with the adhesiveapplying roller and tab in section;

Figure 8 illustrates an end view illustrating the step of breaking orturning the tab against the end of the form;

Figure 9 illustrates a side sectional view with the end of the blankbeing folded against the adhesive surface of the tab;

Figure 10 illustrates a perspective view of one corner of the completedarticle; and Figure 11 illustrates a View in elevation showing themechanisms on each side of a former with which the mechanism isassociated, parts of the device on one side of the former being omitted.

In these drawings, 15 denotes one of the corner posts of a box makingmachine which may be regarded as of conventional type, and it hasthereon a forming rail 16, and it will be understood that these parts ofthe mechanism are duplicated at the four corners of the box former. 17denotes a plunger or former and it is operated with respect to theforming rails and the mechanisms to be hereinafter described, and postssuch as 18 extend upwardly from the former. Sleeves such as 19 areslidable on the posts 18 and they are associated with and carry a plate20, and the relation of the plate 20 to the former is determined by thedepth of the sleeves or the position which the plate occupies withrelation to the sleeves. The plate 20 is also associated with andcarries an angle plate 21 on either side and spaced to the width of theform, and the depending portion of the angle plate extends to the bottomof the former.

Bracket-s such as 22 are attached to the corner posts 15 and they areintended to support paste boxes such as 23, and the paste boxes areattached to the brackets by fasten ings 24 such as bolts or the like,which may slide in enlongated holes 25 in the brackets. Guide rails suchas 26 are held in positions above the paste boxes by brackets such as27, and it is to be understood that the card or blank rests upon theguide rail when it is delivered to the machine.

Each paste box and its mechanism comprises, in the present embodiment ofthe invention, the box 23 with shafts 28 and 29 extending therethrough.The shaft 28 has stationary bearings and the shaft 29 adjustablebearings, as will presently appear. The shaft 28 carries a roll 30 whichapplies paste to a tab and the shaft 29 carries a wiping roll 31. Theshafts 28 and 29 have pinions 32 and 33 secured to them, respectively,on their ends externally of the paste box, and these pinions are in meshso that the shafts 28 and 29-will operate in unison. A pulley 34 issecuredon the shaft 28 and it may be driven by any suitable source ofpower that need not, it is thought, be shown for an understandingof theinvention by one skilled in the art. It is the purpose of the inventorthat the pulley 34 should, in the present showing of the invention, berotated 'anti clockwise or in a direction of the downward travel of thetab. A hearing 35 externally of the paste box is supplied for the shaft29 and the shaft is movable in slots 36 formed in the walls of the pastebox to permit the bearing of the said shaft 29 to be adjusted withrelation to the shaft 28 in order that the rolls 30 and 31 of the shaftsmay be adjusted with relation to each other. 'The bearing 35 is adjustedwith relation to the paste box by means of screws 37 at the sides of thebox and the screws 38 at the ends of the box. The screws 37 are in thenature of clamp screws and are loosened during the adjust ment of thescrews 38 for positioning the parts.

The tab breaking or turning mechanism is applied to the frame by meansof brackets 39 and 40, a pair of which is associated with each cornerpost of the machine. Plungers 41 are slidably mounted in the brackets 39and and it is seen that the bracket 39 is associated with a corner post15, whereas the bracket 40 is spaced therefrom. Collars 42 and 43 aresecured to each plunger, and the said collars are in spaced relation toeach other. A cross bar or plate 44 will extend from the collars of oneplunger to like collars on another plunger at the opposite corner of themachine. A plate or link 45 connects each of the pair of collars on eachplunger, and preferably the plate is mounted on fastenings 46 such asscrews, by which the collars are held on the plunger. Springs 47 areinterposed between the plate and the collars, and the said springs arerelied upon to absorb shock incident to the operation of the plungersthrough means of the cam 48 which is mounted for reciprocation with thecross head of a box machine such as has been referred to. The plungersare retracted against the action of the cam 48 by a spring 49 on a rod50 which slides through guides 51 of a bracket 51. The spring bearsagainst a shoulder 52 of the guide and against an abutment located inproximity to the fastenings 53, by which the cross bar is connected tothe rod 50. Preferably, the parts just described are duplicated on eachside of the cam 48 in order that the plunger-s operated by the cam willact in unison.

The forming posts and standard of a machine of this character aresupplied with rollers 54 that are rotatably mounted on shoulderedtrunnions 55, and these rollers serve as supplying additional pressureat the ends of the former.

A sleeve or length of tubing 56 is applied to the shaft 28 between thepaste boxes which will assist in bending the sides of the box as it isdrawn from the side rails of the machine by the former.

The functions of the several parts of the machine have been stated inconnection with a description of the elements, but it might be furtherstated that when the card or blank is fed between guide rails 26 toproper location which may be determinedby any conventional type of stopthat may be mounted on the guard rails, the former of the machine startsdownwardly to fold the sides of the box. In passing the roll 30, pasteis applied to the outer surface of a tab, which tab is held closelyagainst the roll by means of the depending flange of the angle plate 21.When the lower side of the former reaches the center line of the roll30. the extension of the plate 20 is arrested by the extension of thebracket 27, the angle plate 21, the plate 20 and the sleeve 19 willremain stationary, whereas the former carrying the posts 18 continuesdownwardly.

After the card or blank is carried below the forming rails of themachine, the plungers 41 are thrustinwardly by means of the cam 48 andits cross bar, turning the tabs against the end of the former.Immediately after these tabs are turned, the ends of the card or blankare turned upward against the outer pasted surfaces of the tabs by meansof the end forming posts and their rollers 54. The subsequent'steps ofthe operation of the machine such as are produced by the stayingattachment may remain as in the patented machines mentioned.

I claim:

1. In a paper box making machine, a formtravel of the blank, means belowthe forming rail for bending the tab of that portion of the box shapedby the forming rail and former, and means on a lower plane for pressingthe side of a box into contact with the bent tab.

2. In a paper box making machine, a frame having a blank supportthereon, said blank having tabs, a forming rail below the said supportfor bending a portion of the blank to form a side of the box, anadhesive distributor in a plane below the blank support, means forholding the tab of the blank against the adhesive distributor as theformer descends, means for bending the tabs thereafter and means forpressingthe side of the box at right angles to the ones containing thetabs into engagement with the tabs.

3. In a paper box making machine, a form er having guides, sleevesslidable on the guides, an element traveling with the sleeve andprojecting beyond the edges of the formor, a plate car ied with theelement having a depending portion extending downwardly at the edge ofthe former, supports for arresting the member and holding it when theformer has descended a predetermined extent, asupport for a blank in thepath of travel of the former, an adhesive distributor adapted to coactwith the surface of the depending portion of the plate for distributingadhesive on a portion of the blank in its descent, a forming rail withwhich the former coacts to shape a side of the box, a reciprocatingelement in a plane below the forming rail adapted to engage a tab at theend of a side of the box for bending the said tab against the side ofthe former, means for imparting motion in one direction to saidreciprocating clement, means for retracting the said element, and meansfor pressing the side of the box at an angle to that having the tabsinto engagement with the side of the former and the said tab.

4. In a paper box making machine, an adhesivc distributor including areceptacle for the adhesive, shafts extending through the receptacle andjournaled in operative relation to each other, an adhesive distributingelement on one of the shafts, a wiping element on the other shaftcoacting with the distributor, a sleeve on the distributor shaft adaptedto coact with a former for shaping a blank, and ncans for operating thedistributor shaft.

5. In a paper box making machine, an adhesive distributor including areceptacle for the adhesive, shafts extending through the receptacle andjournaled in operative relation to each other, an adhesive distributingelement on one of the shafts, a wiping element on the other shaftcoacting with the distributor, a sleeve on the distributor shaft adaptedto coact with a former for shaping a blank, and means for operating thedistributor shaft and the wiping shaft in unison.

6. In a paper box making machine, an adhesive distributor including areceptacle for the adhesive, shafts extending through the receptacle andjournaled in operative relation to each other, an adhesive distributingelement on one of the shafts, a wiping element on the other shaftcoacting with the dis tributor, a sleeve on the distributor shaftadapted to coact with a former for shaping a blank, and means formounting the shafts for movement in unison and for adjustment of onerelative to the other.

7. In a box making machine, a tab bending instrumentality comprising aplunger mounted for reciprocation on a plane at right angles to a formerand operative to bend a tab against the former, means for moving thesaid plunger inwardly, and means for retracting the said plunger.

8. In a box making machine, a tab bending instrumentality comprising aplunger mounted for reciprocation on a plane at right angles to a formerand operative to bend a tab against the former, collars secured inspaced relation to each other on the plunger, elements projectingupwardly from said collars, springs on said elements, a bar secured onsaid elements and supported by the springs, a vertically movable camadapted to engage the edge of the bar for forcing the plunger inwardly,and means for retracting the said plunger.

9. In a box making machine, a tab bending instrumentality comprising aplunger mounted for reciprocation on a plane at right angles to a formerand operative to bend a tab against the former, collars secured inspaced relation to each other on the plunger, elements projectingupwardly from said collars, springs on said elements, a bar secured onsaid elements and supported by the springs, a vertically movable camadapted to engage the edge of the bar for forcing the plunger inwardly,means for retracting said plunger consisting of a rod secured to thebar, a guide for said rod, a spring encircling the bar and having anabutment on a portion on said guide.

10. In a box making machine, a forming rail, a support for a box blankhaving a tab above the forming rail, a former for carrying the blankdownwardly from the support and coacting with the forming rail to shapethe box, means for applying adhesive to the tab during the travel of theblank, means for bending the tab after the side is bent, and means forbending the angularly disposed side against the tab.

ROBERT P. FRYE.

